Spare shift? (5)
I believe the answer is:
stint
This clue is a double definition.
'spare' is the first definition.
(I've seen this before)
'shift?' is the second definition.
(thesaurus)
(Other definitions for stint that I've seen before include "Be sparing; sandpiper" , "one's allotted task" , "Restrict to small allowance, be niggardly" , "Stretch; be miserly" , "Be niggardly with tints" .)